Oh ya, I doubted more than expected. I had doubts all the time. The way was extremely, extremely difficult. … At one point I had to describe what I am doing to a person who is a great intellectual but not a scientist, and I told him what we felt is that we are climbing mountains in order to reach the climax – and these mountains are like the Everest, the biggest most difficult to climb – only to find out that there is another mountain waiting behind it to be climbed afterwards. So every climbing was an achievement but there was a bigger problem behind it or above it. I had lots of minutes that I didn't expect, but I thought science in general and this science particularly is worth the effort – even if we would never get the ultimate result.

Now I try to protect one hour in the morning and one in the afternoon where I turn off Slack, and I don't check email. I might read, or write in a journal, or just go for a walk. It's become one of the most important parts of my day. It's when I'm most creative, and when I hit on ideas that can take the company in new directions.

I’m a super big fan of list making. I’m like the list queen. And every problem I have ever had has been solved by a list. You write down all the reasons for this, and all the reasons for the other thing, and then there are sub-lists. You can color code them. You can get highlighters. And the answer is there.

There's a term that gets thrown around a lot – keyboard warrior. It's used to refer to someone who makes aggressive or abusive posts online, often anonymously. I like the name. In my mind, when I read something especially horrific on my feed, I imagine it's written by a lone person unacquainted with personal hygiene practices, dressed in a poorly fitted super hero costume – one that is baggy in all the wrong places.

Only the disciplined ones are free in life. If you are undisciplined, you are a slave to your moods. You are a slave to your passions.

When I have a lot of pain, I try to confuse my mind to forget about the pain and think about the distance. I don't want pain to be in my mind, because I'd really lose focus on running. After winning, you won't have that pain, but it comes later. The marathon is hard; the second day, you don't go up or down stairs.

Our life here is simple, very simple. Get up in the morning, go for a run, come back. If it is a day for cleaning, we do the cleaning, or we just relax. Then go for lunch, massage, the 4 o'clock run, evening tea, relax, go to sleep. As simple as that.

When you become a boss, you don't think straight. It's better to be a leader than a boss. That is why I do my share of the cleaning. That is how to show the way to young people. I am trusting that I am leading them in a good way.